package com.bestdreamer.example.aqs;

import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.*;

@Slf4j
public class CyclicBarrierExample2 {

    private static final CyclicBarrier barrier = new CyclicBarrier(5);

    public static void main(String[] args) throws Exception{
        ExecutorService executor = Executors.newCachedThreadPool();

        for(int i = 0; i < 10; i++){
            final int threadNum = i;
            Thread.sleep(1000);
            executor.execute(() -> {
                try{
                    race(threadNum);
                }catch (Exception e){
                    log.info("exception:",e);
                }
            });
        }
    }

    private static void race(int threadNum)throws Exception{
        Thread.sleep(1000);
        log.info("{} is ready",threadNum);

        // 捕获该异常后，程序可继续往下进行
        try{
            barrier.await(2000, TimeUnit.MILLISECONDS);
        }catch (BrokenBarrierException | TimeoutException e){
            log.warn("BrokenBarrierException",e);
        }
        log.info("{} continue",threadNum);
    }
}
